Lock



Jan. 1, 1924 1,479,743

A. SALATA LOCK Original Filed March 8. 1922 I A TTOHA/EYS drawings.

Patented Jan. 1, 1924.

STTES ANDREW' SALATA, OF NEW YORK, N. Y.

LOCK.

Application inea March s, 1922, serial No. 541,987. Renewed July 9, '1923.

To all w imm it may concern.

Be it known that I, ANDREW SALATA, a citizen of the United States, and a resident of the city of New York borough of Manhattan, in the county and tate of New York,

have invented a new and Improved Lock, of which the following is a full, clear, and exact description.

The invention relates to a lock, and has for an object the provision of means whereby a simple and efficient lock is produced involving a minimum number of parts and, hence, an enhancement of the economy of manufacture of the lock.

Another obj ect resides in the provision of means whereby it is absolutely impossible to retract the bolt from its locking position eX- cepting by the actuation of the proper means.

A further object resides in the provision of means whereby when the bolt is in its locking position means are established to prevent the bolt from being retracted by anybody operating from one side of the door.

A still further object resides in the particular construction and arrangement of parts which are hereinafter described and claimed and Vshown in the accompanying Other objects will appear from a consideration of the following` specification and claims.

The invention is illustrated in the drawings, of which- Figure 1 'is a horizontal section taken through the lock on the line 1-1 of Fig. 2.

Fig. 2 is a vertical section taken on the line V2--2 of Fig. 1.

Fig. 3 is a vertical section taken onV the line 3-3 of Fig. 2.

Fig. 4l is a view of the lock from what normally constitutes the inside of the door.

Fig. 5 is a vertical section of the parts Yshowing' the bolt in the locking position.

Fig. 6 shows the parts with the bolt in locking position and mea-ns actuated to prevent the bolt from being retracted from one side of the lock, preferably the outside.

Fig. 7 shows the bolt in the retracted position.

The form of the invention shown in the drawings is a preferred form, although it is understood that modifications in the construction and arrangement of the parts and in the character of the materials used may be adopted without departing from the spirit of the invention.

The invention is shown in the drawingsas a preferred form and is applied to the matter of locking a door 1 with respect to a jamb 2. The door is provided with a lock casing 3 and the j amb is provided with a striker plate 4 and casing 5.

In the lock casing 3 a bolt 6 is disposed normally held in its forward or locking position'v by a spring 7. This bolt is supported on an inwardly projecting :dange 8 formed from` the Vmaterial of the casing 3. The forward end of the bolt passes through kapertures 9 and 10 in the lock and striker casing', respectively, and is provided with a dependent lip 11. This lip engages a pivoted latchplate 12 pivoted within the striker casing' and depresses the same momentarily as it entersV the striker case7 a spring 13 then restores the latch plate 12 to its normal position. This latch plate is provided with an upstanding ange 111 which, when the, plate is in its normal position, lies in the pathof thenger 11 to prevent the return of the bolt until the latch plate has been depressed or moved -o'utf' of the path of the finger or lip 11. Pivotally mounted on the bolt 6 is a bar'15 the forward end of which liesadjacent the rear face of the'finger or lip 11. The rear Vend of the bar is held downward by a spring 16 sothat the normal position of the 'bar is as shown in Fig. 2. A pair of dogs 17 and 18 are rotatably mounted within the lock'casing 3. The dog 17 is associated with a key-operated barrel 18au disposed on the outside of the door 1,

and the dogs 18 is associated and operated by an arm or lever 19 on the inner face of the door. This arm 19 is provided'with a knob 20 which is movable on the arm held forward by a spring 21. The forward end of the knob 2O extends beyond the arm 19 and is adapted to engage with one or more'holes,

suchas 22, 23 and 24C, to hold the arm in anyV desired position.

The lower face o f the bolt 6 is provided with lugs 25 and 26. These lugs are adapted to be engaged by the dogs 17 and 18 t'o move the loc In the operation of the lockait will vbe assumed that thev key 27 is inserted in the keyl barrel 18a and moves the dog 17 in the counterclockwise direction from the position shown in Fig. 2. During this movement and condition, the dog 17 engages the lug 25 which will engage the rear end of the bar or lever 15, elevating the same against the action of the spring 16 and thereby depressing the front end which engages the flange 1d of the latch plate 12 and depresses the same against the action of the spring 16. Further movement of the dog 17 will hold the bar 15 in this position and also engage the lug 25, whereupon the bolt 6 will be withdrawn. The position of the parts at the moment the dog 17 engages the lug 25 is shown in Fig. 5, with the latch plate 12 depressed, permitting the lip 11 to be withdrawn from the striker casing.

Of course, whenever the dog 17 releases the bolt 6 it is moved forward immediately by the spring 7 When released the bolt, moving forward out of the lock casing, will project into the striker casing, providing` the two casings are properly alined', and

Vwill momentarily depress the latch plate 12 until the bolt has moved to the ull end of its stroke, whereupon the action above mentioned will take place to prevent the bolt from beingretracted excepting by a proper means able to actuate either of the dogs 17 and 18. rlhe operation of the dog 18 of the arm 19 on the inner face of the door will eiect the retraction of the bolt in a manner imilar to the retraction caused by the dog` 18, lexcept that the dog 18 will engage the lug` 28, the action in other respects being the same.

The normal position orn the arm 19 is when the end of the knob 2O is in engagement with the depression 241. When the arm is moved' upward to the left to engage with the depression or hole 22, the dog 18 has been moved to the position in which it is shown in Fig. 7. lIn this case the bolt 6 has been retracted by the dog 18. n other words, the door has been unlocked from the inside. 0n the other hand when the arm 19 is moved downwardly and to the left to engage with the depression 23, the dog 1-8 is moved to the position shown in Fig. 6; in which position, it will be noted, it lies in the path of the dog 17 and because of this will prevent the dog 17 from engag ingeither with the bar 15 or the bolt 6, so that the bolt cannot be retracted from the outside of the door. The arm 19, therefore, has anormal and two operative positions,

one a bolt retracting position and' one an obstructing position.

In the operation of the device, therefore, assuming the parts inthe position. shown in Fig. 2, if the dog 18 is moved forward to the left it will engage the bar 15 and depress -the latch plate 12 so that Jfurther movement of the dog 18 engaging the lug 26 will retract the bolt 6. ln a similar manner, the movement of the dog 17 bt a key or other device on the outside of tie door will effect the retraction of the bolt. llmmediately either of these dogs release the bolt, it is pushed forward by the spring 7. In entering` the striker casing it depresses the latch plate momentarily until the bolt moves beyond' the latch plate, which then immediat-ely springs back into normal position. 1When the dog- 18 is moved to the obstructing` position, it lies in the path of the dog 1l and will prevent any one moving the dog 17 from the outside of the door to a position in which it will retract the bolt.

What I claim is:

1. A locking mechanism which comprises a sliding bolt, means operated from one side of the mechanism to retract the bolt, and means operated from the opposite side of the mechanism tol retract the bolt, the sec.- ond means when disposed in a certain position lying in the path of movement of the first means preventing the bolt from being retractedy from one side of the mechanism.

2. A locking mechanism which comprises a sliding` bolt, a dog` operated from one side of the lock to actuate the bolt, a second dog operated from the opposite side of the lock to retract the bolt, the second dog being so disposed as to lie in the path of the first dog when moved to a definite position, whereby the actuation of the bolt by the first dopr can be prevented'.

8. A locking mechanism which comprises a bolt having a dependent finger at its front end, a pivoted arm mounted on the bolt with an end disposed adjacent the dependent finger, resilient means engaging' withthe other end of the arm to hold the` front end behind the iinger, and means 'for actuating the bolt, said means adapted to contact with the rear end of the arm to depress the front end thereoic bef-ore the bolt is retracted.

4l. A locking mechanism which comprises a sliding;` bolt, a striker casing in which said bolt is adapted to extend, a latch plate in said casing adapted to engage the end of the bolt, a pivotcd armv mounted on the bolt to engage with the latch plate and release it from the bolt when actuated, andmeans for retracting the bolt, said meansl adapted prior to its Contact with the bolt -to move the pivoted arm and depress the latch plate, whereby the bolt is released for retraction.

yANDRl-V SALATA. 

